Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1996-07-19
1999-05-11
Saras, Steven J.
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345207, 349 16, 250205, G09G3/36
Patent
active
059032472
ABSTRACT:
An apparatus for controlling the opacity of a liquid-crystal window, having a light emitter positioned adjacent to one side of the liquid-crystal window, a light detector positioned adjacent to the opposite side of the liquid-crystal window, and a differential amplifier/driver that compares the output of the light detector with an input control signal and generates a differential drive signal to vary the opacity of said liquid-crystal window.
REFERENCES:
patent: H737 (1990-02-01), Rushford
patent: 3976361 (1976-08-01), Fraas et al.
patent: 4039803 (1977-08-01), Harsch
patent: 4456335 (1984-06-01), Mumford
patent: 4475031 (1984-10-01), Mockovciak, Jr.
patent: 4688895 (1987-08-01), Jacob
patent: 4726660 (1988-02-01), Rushford
patent: 4749257 (1988-06-01), Klausz
patent: 4846559 (1989-07-01), Kniffler
patent: 4920257 (1990-04-01), Furthbauer et al.
patent: 5152111 (1992-10-01), Baughman et al.
patent: 5170271 (1992-12-01), Lackner et al.
patent: 5172256 (1992-12-01), Sethofer et al.
patent: 5173342 (1992-12-01), Sato et al.
patent: 5208688 (1993-05-01), Fergason et al.
patent: 5252817 (1993-10-01), Fergason et al.
patent: 5377032 (1994-12-01), Fergason et al.
patent: 5654736 (1997-08-01), Green et al.
Ivanov, "Economical Two-Frequency Control Circuit for High Speed Liquid-Crystal Electrooptic Shutter," 1991 Plenum Publishing Corporation, pp. 474-476.
Rynders et al., "Single-Channel Sinusoidally Modulated Visual Signal Generator with Variable Temporal Contrast," 1993 Optical Society of America, J. Opt. Soc. Am., No. 7, pp. 1642-1650.
Howard Dwight L.
Johnson Chris A.
Awad Amr A.
O'Banion John P.
Saras Steven J.
The Regents of the University of California
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